ST2603 230V non-programmable household boiler thermostat with large dial

Wired Thermostat 230V Wired Thermostat Gas Boiler Thermostat Non-Programmable Thermostat

230V Non-programmable Digital Heating Boiler Thermostat For Household Usage

Name: 230V Non-programmable Digital Heating Boiler Thermostat For Household Usage
Brand: Smart Therm

This is ST2603 in its household boiler configuration, built around a large dial adjustable button rather than a keypad. It is non-programmable with heating, cooling and frost protection modes, and the switching sensitivity is adjustable so the installer can suit the cycle rate to a radiator or a slower system. Housing is flame retardance ABS and PC with white, blue or green backlighting.

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Key Benefits

Large dial adjustable button suits users who dislike menus
Frost protection mode included alongside heating and cooling
Adjustable switching sensitivity tunes cycle rate to the system
Three backlight colours: white, blue or green
Flame retardance ABS and PC housing for project specifications

Problems It Solves

Occupants unable to operate multi-button controls
Cycle rates unsuited to the heat emitter
Pipes freezing in rooms switched off during cold spells
Standard ABS failing a project material specification

Who It Is For

Heating installers on domestic boiler work
Merchants stocking a dial fronted 230V stat
Care and retirement housing operators
OEM buyers wanting a dial model in a digital range

Technical Features

Wired 230V non-programmable control
Large dial adjustable button
Heating, cooling and frost protection modes
Room temperature calibration adjustment
Switching sensitivity adjustable
Large clear LCD with white, blue or green backlight
Wall mounted, easy to install
Flame retardance ABS and PC housing, 400 g, one instruction sheet per box

Specifications

Model	ST2603
Backlight	White/Blue/
Material	Flame Retardance ABS+
Weight	400g
Package Included	1Wired Thermostat 1Instruction

Specifications are taken from the manufacturer data for this model. Confirm the exact configuration with us before you order.

Application Scenarios

Household gas boiler heating with one comfort setpoint
Homes with older or less confident occupants
Rooms needing frost protection when unused
HVAC installations replacing a worn mechanical dial

Quality Control

Dial travel and detent feel checked on every unit
Switching sensitivity range verified during the functional test
High voltage insulation test on the 230V section

Customisation Options

Backlight white, blue or green
Dial cap colour and front label
Setpoint range narrowed for care and hotel projects
Manual and carton in the buyer's language

Comparison

How It Compares

The underfloor ST2603 configuration

This version is set up for household gas boiler heating and offers white, blue or green backlighting.

Keypad thermostats such as ST2301

ST2603 puts the setpoint on a single dial, which is what reduces support calls in homes with older occupants.

Use guide

Installing And Commissioning

Step 1

Isolate the 230V supply and confirm the circuit is dead

Step 2

Mount at about 1.5 m on an internal wall clear of the radiator

Step 3

Land the switched conductor on the marked terminal

Step 4

Set switching sensitivity to suit the heat emitter

Step 5

Turn the dial to the target temperature and confirm the boiler fires

Answers